Argentina, in a surprise development, overtook Colombia to become South America’s fourth-largest oil producer. The country is undergoing a once-in-a-generation unconventional hydrocarbon boom, which began with Buenos Aires nationalizing integrated energy major YPF in 2012. Since then, Argentina’s oil and natural gas output has kept soaring higher, regularly hitting new monthly highs as volumes of shale oil and gas production grow. It is Argentina’s national oil company, YPF, which is at the forefront of the boom with it responsible…